The Main Enclosure on the top of the mountain is above the meeting point of the routes. There is a rest station on the top where you can take a rest and enjoy a nice view of the Kubiki Plain, which was the core territory of the Uesugi Clan in the past.
The map around the Main Enclosure
Looking up the Main Enclosure from the meeting pointThe Main EnclosureThe rest station on the Main EnclosureA view of the Kubiki Plain
Another enclosure called Komegura-ato, or the granary ruins, is just below the Main Enclosure over another ditch. Lots of burned rice grains were found in this enclosure, probably for the same reason as the Third Enclosure. The ditches around the Main Enclosure seem to have been used as access ways, which is also interesting.
The granary ruins seen from the Main EnclosureThe ditch between the Main Enclosure and the granary ruinsThe granary ruinsThe Main Enclosure seen from the granary ruinsThis ditch has also been used as an access way
Later History
After the Otate Rebellion, Samegao Castle was abandoned. The burned rice grains in the granary ruins were already known in the Edo Period. The research of the castle ruins started in 1963. The excavation was also done between 2001 and 2006. It found that the ruins still kept the state of the abandoned castle in good condition. As a result, They were designated as a National Historic Site in 2008.
The sign of Samegao Castle Ruins at the Main Enclosure
My Impression
The ruins of Samegao Castle are becoming popular among history fans, including women, due to the tragic story of Kagetora Uesugi. Some historians also speculate that if Kagetora had won in the Otate Rebellion, the three clans, the Uesugi, Takeda and Hojo, could have been united against the threat from the rulers in western Japan, Nobunaga Oda and Hideyoshi Toyotomi. Historical fact tells us the Takeda and the Hojo were isolated from each other after the rebellion, and defeated one by one. Only the Uesugi somehow survived. It may be a good way to visit a castle or castle ruins to think about real history or speculative history.
The portrait of Nobunaga Oda who defeated the Takeda Clan, attributed to Soshu Kano, owned by Chokoji Temple, in the late 16th century (licensed under Public Domain via Wikimedia Commons)The Portrait of Hideyoshi Toyotomi who defeated the Hojo Clan, attributed to Mitsunobu Kano, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)
How to get There
If you want to visit the ruins by car, it is about a 15-minute drive away from Joetsu IC or Nakago IC on the Joshinetsu Expressway. There is a parking lot for visitors in front of the park. If you want to use public transportation, it takes about 30 minutes on foot from Kita-Arai Station on the Echigo Tokimeki Railway to get there. To get to Kita-Arai Station from Tokyo: Take the Hokuriku Shinkansen Super Express and transfer at Joetsu-Myoko Station to the Echigo Tokimeki Railway.
The final place of the Otate Rebellion and Kagetora Uesugi
Location and History
Branch of Kasugayama Castle
Samegao Castle was located on a mountain in the western part of Echigo Province which is now Nigata Prefecture. It is uncertain when the castle was first built, but in the late 16th Century, it was one of the satellite castles of Kasugayama Castle, the home base of Kenshin Uesugi. Kenshin was one of the greatest warlords at that time in Japan, who built the network of castles to protect his home base. Samegao Castle is, in fact, rather well-known as the final battlefield of the Otate Rebellion and the place of Kagetora Uesugi’s death, who was defeated in the rebellion.
The location of the castle
The portrait of Kenshin Uesugi, owned by the Uesugi Shrine (licensed under Public Domain via Wikimedia Commons)The network of the branch castles around Kasugayama Castle exhibited by Joetsu City Buried Cultural Property Center, Samegao Castle is marked by the red circle
Kagetora is adopted from Hojo to Uesugi
Kagetora Uesugi was an adopted child of Kenshin, but had been born as a family member of the Hojo Clan, which fought with Kenshin over the Kanto Region. The reason why Kagetora came to Uesugi was that Uesugi and the Hojo made peace temporarily in 1569 against the Takeda Clan. The Takeda clan broke the alliance of the three clans (Takeda, Imagawa and Hojo) by invading Imagawa territory. The Hojo clan was very angry about it. However, the new alliance between Uesugi and the Hojo lasted for only two years because the Hojo quit and reforged the alliance with the Takeda in 1571. Ordinarily, Kagetora could have been returned to the Hojo, but Kenshin let Kagetora stay as a part of the Uesugi clan for some reason. It is said that Kenshin personally liked Kagetora. Even though no portraits of Kagetora remain, records say he was attractive and looked beautiful.
The imaginary portrait of Kagetora Uesugi, from the signboard at the site
Two adopted sons are against each other after Kenshin’s death
With the cessation of the alliance with the Hojo, Kenshin adopted another son from his relatives, called Kagekatsu Uesugi. Kenshin seemed to hope that Kagetora would support Kagekatsu and they would cooperate with each other. Many historians also say Kenshin had not clearly decided his successor before his sudden death in March 1578. In fact, these two adopted sons lived in the same Kasugayama Castle as if Kagekatsu was the master for a while after their father’s death. However, the situation didn’t allow them to make peace. The trusted vassals of Kagekatsu, who were the core members of the government, supported him. Other local lords in Echigo Province and some warlords outside the province supported Kagetora because he had come from the outside. Kagetora’s parents’ home, the Hojo and its ally, the Takeda especially wanted him to be the successor. That made the two successor candidates battle each other starting in May 1578, which was called the Otate Rebellion.
The portrait of Kagekatsu Uesugi, owned by Uesugi Shrine (licensed under Public Domain via Wikimedia Commons)
Otate or the Palace, was originally the residence for Norimasa Uesugi, who was a former shogunate deputy for the Kanto Region and Kenshin’s foster father. Kagetora escaped from Kasugayama Castle to the residence, about 5km from the castle. It became his home base during the battle for nearly one year. At the beginning of the battle, Kagetora was superior in terms of support to Kagekatsu until the lord of the Takeda, Katsuyori Takeda came to Echigo Province with his troops to support Kagetora in June. However, Kagekatsu let Katsuyori return to his home by giving a lot of money and promising to cede some territories. After that, the situation reversed as Kagekatsu had many native loyal retainers while Kagetora had few because of his career. Kagekatsu finally made a full-scale attack on the Otate Residence before it fell in March 1579. Kagetora escaped and tried to get to Odawara, his parental familial home base, Odawara Castle. He stopped by a castle of his supporter, Munechika Horie, which would be the place of his death. This place was called Samegao Castle.
The Portrait of Katsuyori Takeda, owned by Koyasan Jimyoin (licensed under Public Domain via Wikimedia Commons)The imaginary scene of the Otate Residence’s fall, exhibited by the Hida Historical Village Information Center
Kagetora dies in Samegao Castle
Samegao Castle was a satellite castle, but had a large scale because it was on the way to Shinao Province (now Nagano Pref.), south of Echigo, where Kenshin and Shingen Takeda, who was Katsuyori’s father, often battled each other. It was a typical mountain castle at that time, using natural terrain to make it defensive. Many enclosures made of soil were built on the ridges. They were divided by artificial ditches and connected by narrow paths cut vertically on both sides. The routes through the valleys were zigzagged so that enemies could not attack the castle easily.
The statues of Shingen Takeda (on the left) and Kenshin Uesugi (on the right) at the Kawanakajima Battlefield in Nagano PrefectureThe illustration of Samegao Castle Ruins, from the signboard at the site
Even staying in the strong castle, Kagetora was not able to survive without reinforcement from the outside. He was attacked by Kagekatsu’s pursuing troops right away. Some records say Munechika Horie, the lord of the castle also betrayed Kagetora. Kagetora finally committed Harakiri (ritual suicide) at the age of 26 after the castle buildings were burned by the troops.
